The Panzer IV programme was started in 1934, forming, alongside the Panzer IIs and IIIs, the schnellen Truppen , the force that was to become the Panzerwaffe. At first, German planners envisioned the tank in a secondary role, but during the invasions of The Low Countries and France, it took on a more central role. When the Panzerwaffe turned east to attack the Soviet Union, the Panzer IV initially fared poorly against the better-armed T-34. However, upgrades to its gun and armour protection saw it perform far better, not only against Soviet armour but also against British and American tanks in North Africa and Italy. In